//
//  StatusCell.swift
//  Sina
//
//  Created by yuanyuan on 15/12/21.
//  Copyright © 2015年 yuanyuan. All rights reserved.
//

import UIKit
import SnapKit



//cell = 顶部视图 + 转发微博视图 + 底部视图
class StatusCell: UITableViewCell {
    
    var bottomViewTopConstraints: Constraint?
    //定义微博模型属性
    var status: Status? {
        didSet {
            //给顶部视图 设置模型数据
            topView.status = status
            //设置转发微博的数据模型
            
            
            //卸载掉顶部约束
            bottomViewTopConstraints?.uninstall()
            //需要根据树模型 提供的数据 判断是否显示转发微博视图
            if let retweetedStatus = status?.retweeted_status {
                //一定是转发微博
                //1.修改约束
                bottomView.snp_updateConstraints(closure: { (make) -> Void in
                    self.bottomViewTopConstraints = make.top.equalTo(retweetedView.snp_bottom).constraint
                })
                
                //设置转发微博的数据源
                retweetedView.retweetedStatus = retweetedStatus
                //显示转发微博
                retweetedView.hidden = false
                
            } else {
                //一定原创微博
                bottomView.snp_updateConstraints(closure: { (make) -> Void in
                    self.bottomViewTopConstraints = make.top.equalTo(topView.snp_bottom).constraint
                })
                //隐藏转发微博视图
                retweetedView.hidden = true
            }
        }
    }
   
    
//    cell入口
    override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
        
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        
        setupUI()
        //设置cell选中的样式
        selectionStyle = .None
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    
//    自定义cell
    private func setupUI() {
//  使用contentView 添加子视图
    contentView.addSubview(topView)
    contentView.addSubview(bottomView)
    contentView.addSubview(retweetedView)
        
        
//        设置约束
        topView.snp_makeConstraints { (make) -> Void in
            
            
            make.top.left.right.equalTo(contentView)
            
        }
        
        //设置转发微博的约束
        retweetedView.snp_makeConstraints { (make) -> Void in
            make.left.right.equalTo(contentView)
            make.top.equalTo(topView.snp_bottom)
            //便于前期调试
            //            make.height.equalTo(50)
        }
        
//        底部视图约束
        bottomView.snp_makeConstraints { (make) -> Void in
            
            make.left.right.equalTo(self)
//            make.top.equalTo(topView.snp_bottom)
            self.bottomViewTopConstraints = make.top.equalTo(retweetedView.snp_bottom).constraint
            make.height.equalTo(40)
            
        }
        
//        给contentView设置约束非常关键的一点
        contentView.snp_makeConstraints { (make) -> Void in
            
            make.top.left.right.equalTo(self)
            make.bottom.equalTo(bottomView.snp_bottom)
            
            
        }

    }
    
    
//    懒加载 顶部视图
    private lazy var topView:StatusCellTopView = StatusCellTopView()
    
    //转发微博
    private lazy var retweetedView: StatusRetweetedView = StatusRetweetedView()
    
//    懒加载视图
    private lazy var bottomView:StatusCellBottomView = StatusCellBottomView()
    
    
}
